Incinerating-furnace.



P.F. DUNDON. INGINHRATING FURNACE.

APPLIOATION FILED JULY 3, 1911.

k Patented May 5,1914,

4 SHEETS-SHEET 1.

P. F. DUNDON." INGINERATING- FURNACE. APPLICATION IILEflJULYii, 1911.

Patented May 5, 1914.

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1 l 9 1 M3 Y NML O U F N D GE U D IHP AN T Pmm mm P P A Patented May 5, 1914.

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P F DUH'DON. lNGINEB-ATINGTURNAOE. APPLICATION mum JULY 3, 1911.

, Patented May 5, 191.4%.

4 SHEETS-$11331 4.

it and the feeding floor 12 PATRICK IE. DUNDON, OF SAN FRANCISCO, GALIFORNIA. I

INCINERATING-FURNAGE.

To all whom it may concern:

Be it known that I, PATRICK F. Dunnon, a citizen of the United States, residing at San Francisco, in county of San Francisco and State of California, have invented oer tain new and useful Improvements in Incinerating-Furnaces, of which the following is a specification.

My invention relates to an improvment in incinerating furnaces, and the object is to provide a simple, efl'ective arrangment of elements to take care of waste and refuse, and it consists in certain novel features of construction and combinations of parts which will be hereinafter described and pointed out in the'claims.

In the accompanying drawings Figure 1 is a front elevation of the incinerating furnace, Fig. 2 is a longitudinal vertical section on line 22 of F i 3, Fig. 3 is a top plan View of the feeding floor partly in-section showing one of the units in section, taken on line 33 of Fig. 2, Fig. 4 is a transverse vertical section taken on line 4% of Fig. 3, Fig. 5 is a view showing a modified form of the air intake for force draft, and Fig. 6 is a detail view of the expansion springs and buclcstays.

The furnace in its preferred form I have illustrated it in F ig. 3-comprises two main units, and-each unit comprises four cells 1, 1, one combustion chamber 2, one supplementary chamber 3, one boilercell 4-, and a water tube boiler 5 therein, one air heat-er cell 6 with tubular air heaters 8, S, therein, and a water heater cell '7, having tubular water heater 9, located therein. Y V

Beneath the cells and combustion chamber are the usual grates 10, 10, and above is the arch 11, and above the arch 11 and between is a hot air chamber 13, which is fed by an air intake pipe 1 1 which extends up to a point somewhere near the ceiling of the building in which the furnace is placed. its object being to withdraw the foul odors therefrom which are heated in the heating chamber 13, and after ward conducted to a point beneath the grates, and through the combustion chamber as will now be explained.

An air pipe 15 lcads'iirom the air space or chamber 13 zit-a point preferably just. above the supplementary chamber 3 over the boiler cell, it being approximately the width of the unit at the point where it leaves the air space or chamber 13, as clearly Specification of Letters Patent. Application filed July 3, 1911.

on IS drawn outthrough a Serial ltlo. 636,675.

shown in the lower unit of Fig. 3, thence tapering to aoproziimately the horizontal area of the airlieater 8, as also shown in the lower unit of Fig. 3, so that the air isfun ther heated as it passes through the tubes of the air heater, as will be more fully .explained hereinafter. From this point, the suctionpipe 16 by the circulating fan 17, and thence returned by the hot air pipe 18 to the hot air flue 19, whence it discharges laterally through openings beneath the grates, as shownin Fig. 2, which openings are controlled. by doors 20, 20 operated by any practical met 10d for opening and closing the same. in this way, theair is thoroughly heated before it passes up through the grates, and also a perfect ventilation is provided, and the noxious odors of the building are completely remove It is evident that. the air from the building might be taken in through an air intake stack directly to the air heater, if desired, shown in Fig. 5, instead of passing through the air space or chamber 13. Not. withstanding this, however, it is my prefer-- ence to take it through the entire length of the air space-or chamber 13, for obvious reasons. First, it gets the benefit of the heat radiating from the arches of the furnace; and second, it has the secondary and very important function of keeping the feeding floor 12 above, cool, or sufiiciently cool so that it is possible to wall: or drive over it with comfort. h

Charging hoppers 1", 21, are provided over each colt 1, 1, and these are provided with covers. which may be supported and. carried on an overhead track, or in any other approved manner. Beneath these charging hoppers is the drying hearth 22, as showr Patented May 5, i914.

clearly in Fig. 4, this drying hearth being directly over the air flue 19, so that the hot air circulated and retained further utilized to dry the material to be in.- bineratcd before it is raked over on the grates, access to which cell, as s own clea ly in Fig. a, anddam or 25 shuts off communication from the boiler in the supplies, a cause the;

cell thorcinto, and damper mentary chamber is opened. products of combustion fr? and the combustion chamber e cells ;it, 1, .2 to. pass by the fines is Y may be gained through the usual doors 23,23, just over the grates. a V

A. by-gass 24 egtends around thexboilers 

